Daily Geology Links on Delicious – Friday 12th of December 2008

Quartz crystal was, before the war, a minor nonmetallic resource. Wartime demand for large-sized clear single crystals of quartz for use in making quartz oscillator plates for radio frequency control has emphasized the strategic importance of this industrial mineral. Quartz crystal of usable quality is of limited occurrence, and little has been written regarding the geology of the deposits although there has been considerable work done during the war period. There are also interesting relationships to be brought out between the mineralogical and geological characteristics of quartz and the problems inherent in the supply and use of this commodity. It is the purpose of this paper to discuss the geology and mineralogy of quartz crystal deposits and to point out the interdependence of quartz crystal geology and the supply situation in Brazil. (Tagged with Geology of Quartz Deposits rock forming mineral)

A comprehensive resource for research and communications in the geosciences, built on a core database aggregation of peer-reviewed journals indexed, linked, and inter-operable with GeoRef. (Tagged with science fulltext geology)

Contains millions of references to geoscience journal articles, books, maps, conference papers, reports and theses. Covers the geology of North America from 1669 to the present and the geology of the rest of the world from 1933 to the present. (Tagged with science csa geology)

This paper critically examines the general standing of geology among its sister sciences, and evaluates the subject's present usefulness versus its potential utility in the total economy of a nation either at war or at peace. An attempt also is made to appraise the present position of the earth scientist as compared with that of non-geological scientists in the war effort; and ways are suggested for improving the situation not only for the good of the individual geologist, but for the welfare of the country as a whole. (Tagged with military Geology in War and Peace: ABSTRACT Carey Croneis)

The Military Geology Unit was a unit in the United States military during World War II. It was established in June 1942, six months after Pearl Harbor. People in the US Geological Survey wanted to get involved in the war effort, either for patriotism or prestige or both, and provided a geological intelligence report for a randomly chosen country, Sierra Leone. (Tagged with Military Geology Unit USGS)

Quartz crystal was, before the war, a minor nonmetallic resource. Wartime demand for large-sized clear single crystals of quartz for use in making quartz oscillator plates for radio frequency control has emphasized the strategic importance of this industrial mineral. Quartz crystal of usable quality is of limited occurrence, and little has been written regarding the geology of the deposits although there has been considerable work done during the war period. There are also interesting relationships to be brought out between the mineralogical and geological characteristics of quartz and the problems inherent in the supply and use of this commodity. It is the purpose of this paper to discuss the geology and mineralogy of quartz crystal deposits and to point out the interdependence of quartz crystal geology and the supply situation in Brazil. (Tagged with Geology of Quartz Deposits)

What?s so striking at Antietam is that two geologic units underlie that area,? Whisonant said. ?One is a very, very pure limestone that, as it erodes, it literally melts. Mostly what you get with that is a very even, level, open surface — there just aren?t a lot of deep holes and high hills that give soldiers a place to hide.&quot; On one area of this flat surface, known as Miller's Cornfield, &quot;armies just shot each other to pieces until absolute exhaustion set in.&quot; (Tagged with Link between Geology and Civil War)

Those expert at preparing defenses consider it fundamental to rely on the strengths of such obstacles as mountains, rivers and foothills. They make it possible for the enemy to know where to attack. They secretly conceal themselves under the nine-layer ground. William Leith (Tagged with military geology William Leith)